Software Rewrite Function On The Usb (Outdoor Unit, Hbc); Preparation; Rewriting Software - Mitsubishi Electric PURY-M200YNW-A1 Service Handbook

[9-3 Software Rewrite Function on the USB (Outdoor unit, HBC) ]

9-3

Software Rewrite Function on the USB (Outdoor unit, HBC)

The USB memory stick may be used to rewrite the software of the outdoor unit and the HBC in the same way as using a ROM
writer.
9-3-1

Preparation

Prepare a USB memory stick and a portable battery charger.
A LEAD WIRE ASSY USB for connecting the control board and the charger is also necessary.
Make sure the portable battery charger is sufficiently charged.
Prepare a countermeasure program file "******.mot" for the intended model.
Copy the software rewrite program file "******.mot" onto the root folder of the USB memory stick.
Install only one program and only in the root folder of the USB memory stick.
9-3-2

Rewriting Software

The procedure is shown below.
1. Operation procedure
(1) Starting software rewrite mode
[Outdoor unit]
1) Shut down the power for the outdoor unit. Make sure the power for the control board of the outdoor unit is off.
This is done by confirming LED2 is off.
2) Turn on switches SW7-9 of the control board of the outdoor unit.
3) Insert the USB memory stick into the USB port (CNUSB) on the control board of the outdoor unit.
4) Connect the portable battery charger to CN601 on the control board of the outdoor unit.
The power of the control board of the outdoor unit will turn on. Wait for five seconds until the USB memory stick is recognized.
5) Make sure the display "Pro" is shown on the maintenance LED (LED301)
This shows that Software Rewrite Mode has been started.
[HBC]
1) Shut down the power for the outdoor unit and the HBC. Make sure the power for the HBC control board is off.
This is done by confirming that LED (LD001) will not light up when SWP1 is pressed.
2) Turn on switches SW002-9 of the HBC control board.
3) Insert the USB memory stick into the USB port (CNUSB) on the HBC control board.
4) Connect the portable battery charger to the CN703 of the HBC control board. The power of the HBC control board will turn on.
5) Make sure the display "Pro" is shown on the maintenance LED (LD001)
This shows that Software Rewrite Mode has been started.
(2) Performing software rewriting
[Outdoor unit, HBC]
1) Wait for 5 seconds after "Pro" appeared on the LED, and press SWP3 (ENTER) to start software rewrite.
When the rewrite process is in progress, progress bars move as shown below.
2) If "End" is displayed on the LED, the rewrite process has been completed correctly. * Generally, this process takes about five
minutes.
8
- chapter 9
M a i n t e n a n c e L E D D i s p l a y
BS_09_F